Araceae
Anthurium solitarium Schott
SUMMARY
Epiphytic or epilithic; stem 1.5-4 cm diam.; roots descending, velutinous, appearing inflated or with air spaces inside when dried, sharply tapered at apex, 2-9 cm long, 3-10 mm diam.; cataphylls lanceolate, 6- 1 1 cm long, acuminate at apex with subapical apiculum to 5 mm long, drying brown, persisting semi-intact at apex and eventually weathering into coarse, linear fibers. LEAVES erect-spreading; petioles (2)6-28(32) cm long, 5-9 mm diam., spreading, C-shaped to thicker than broad, narrowly and deeply sulcate with obtuse to acute margins adaxially, rounded abaxially, the surface dark green, pale-speckled; geniculum slightly thicker and paler than petiole, 1-1.5 cm long; sheath 2.5-4 cm long; blades subcoriaceous to coriaceous, obovate to oblanceolate, often somewhat elliptic, short-acuminate to acute and apiculate at apex, obtuse to semi-rounded or weakly subcordate at base, 26-70(80) cm long, (6)l0- 23(27) cm wide, broadest at or near the middle, the margins weakly and broadly undulate; upper surface semiglossy, medium green, lower surface weakly glossy, paler below; both surfaces drying matte to semiglossy, yellowish brown; midrib flat to obtusely raised or obtusely sulcate at base, becoming convexly raised, sometimes sharply acute toward the apex above, obtusely to acutely raised, sometimes faintly 1-3-ribbed at base below; primary lateral veins 5-12 per side, departing midrib at (25)40-60(70)º angle, ± straight, becoming arcuate near margin, raised in grooves or weakly to prominently raised on upper surface, prominently raised and stout below, paler than surface; interprimary veins weakly raised above and below when visible, darker below; tertiary veins prominulous, weakly raised to weakly sunken above, moderately visible or obscure above, very weakly raised below; collective vein arising from near the apex or absent, if present sunken above, raised below, 10-20 mm from margin. INFLORESCENCES erect or erect-spreading, or somewhat pendent peduncle (15)30-102 cm long, 3-5 mm diam., 1.3- 16 x as long as petiole, green sometimes tinged with purple, terete, pale- to dark-speckled; spathe spreading, coriaceous, green tinged with purple adaxially, oblong to lanceolate, 6-25 cm long, 1.5- 2 cm wide, broadest near the base, acuminate at apex (the acumen inrolled, 5- 10 mm long), obtuse to acute at base, often decurrent; spadix dark maroon or purple, mostly subsessile (rarely stipitate to 30 mm), tapered, curved, 12-33 cm long, 4- 14 mm diam. at base, 3-7 mm diam. at apex, broadest at the base; flowers rhombic, 1.8-3.6 mm long, 1.2-2.6 mm wide, the sides ± straight to sigmoid; 6-10 flowers visible in principal spiral, (6)lO-12 in alternate spiral; tepals matte; lateral tepals 1-1.6 mm wide, the inner margins broadly convex, the outer margins 2-sided; pistils not emergent; stigma linear becoming ellipsoid, possibly becoming circular, sometimes appearing somewhat caviform when dried, 0.4-0.7 mm long; stamens emerging in a regular sequence; the laterals preceding the alternates by 13-20 spirals, held at edge of the tepals, inclined over and obscuring the pistil; filaments not exserted; anthers 0.4-0.5 mm long, 0.8-0.9 mm wide; thecae ovoid, 0.3-0.4 mm wide, slightly divaricate; pollen golden. INFRUCTESCENCE with spathe persisting; spadix 19-40 cm long, 11-18 mm diam.; berries purple-red, more or less oblong, the basal tepalar fibers strongly adherent, 5-6 mm long, 2-3 mm diam.; pericarp with raphide cells; mesocarp ± dry; seeds 1-2 per berry, covered with raphides, ellipsoid, 4-4.4 mm long, 1.8-2 mm diam., 0.8-1 mm thick, with a gelatinous appendage.